Regulating device for orthodontic correcting appliances



May 4 1926. 1,583,213

P. N. WILLIAMS Y. REGULATING DEVICE FOR ORTHDONTIC ORRECTING PPLIANCES Filed June 25, 1925 BY MMA MJ ATTORNEY -(ZBNVENTOR Patented May 4, y19215.

PERCYv NORMAN WILLIAMS, OF PELI-IAM MANOR, NEW YORK.

REGULATING DEVICE `FOR ORTHODONTIC CORRECTING- APPLIACES.

Applicationled .Tune 25, 1925. Serial No. 39,628.

thodontic Correcting Appliances, of which the following vis a specilication.

This invention relates to improvements in the art and practice of orthodontia and more particularly to a device for regulating the tensional adjustment of orthodontic correct-ing appliances.

A principal objectof my invention is the provision of a regulating devicel that will enable the tension of a correcting appliance to be controlled by a micrometric adjustment, to a predetermined and measurable value. Another principal object of my invention is to provide a ldevice of the character described, that will permit the tensioning adjustment of the correctingappliance to be performed while the appliance is disposed in position on its plaster-cast model. A. further feature of this invention is the provision of an actuating means that will facilitate the adjustment of tension of the correcting appliance, permitting the regulation of the adjustment to be carried out to as fine a degree as desired.

The attainment of the foregoing` and further advantages will become evident from the description following and in the accom v)anvinor drawin0V wherein I have set forth and. illustrated a practical embodiment of my invention.

In the drawing similar reference characters indicate the similar parts in the various views.

Figure 1 shows the complete assembly of Vthe correcting appliance and plaster-cast model mounted on the device, in perspective.

Fig. 2 shows a view in section 'throughA the center of the device, laterally.

Fig. 3 shows an elevation of the movable base-plate member of the device.

Fig. 4L isa sectional .view showing the guide pin 'means for aligning the base-plate members ofthe device. j Y kThe device embodied in my invention is 'composed of the two' substantially similar base-plate members 1 and 2, the 4plate 1 bei 'ing vmovable, relative `to the plate r2, reference being had'to Fig. '1.a' The base-plates l and :2 are adapted tofbe: aligned `with their referring to Fig. e1..

lateral edges abutting each other, forming a continuous base upon which the plastercast model .is to be mounted.

The movement of the base-plate lfrelative tothe base-plate 2 is accomplished through actuation of the micrometer screw 3, referring to Fig. 2. This screw 3 is also 'the medium joining the base-plates 1 and 2 in movable relationship, being disposed'in the aligning openings eXtendin laterally and centrally, therethrough the' ase-plates. n the base-plate 1 the opening is in form of a partly tapped hole, the threadedikportion of the screw 3 engaging with the raam UNITED Srn'rns PATENT OFFICE threaded portion of they opening. 'In the g baseplate 2 the opening assumes thefform .of a through hole .acting as a bearingfor the shank of the screw 3. The protruding extremity of thesorew 3 is here shownfpro- .vided with a lrnurled head to facilitate manipulating. Thus by turning the screw 3 in the proper direction, the base-plate 1 will be moved away from or towards the, baseplate 2, the movement of thebase-plate 1 taking place in a horizontal plane, coincident with the plane of the base-plate 2, and vparallel thereto. i

That the base-plates 1 and 2 may be held in alignment during the entire range of movement of the plate 1, the plate 2 is provided with' the guide pins L permanently `set therein, and the platey 1 is provided with the co-operating bearing'holes 5 therefor,

There has been arbitrarily indicated two guide pinsa, one on eachside of the screw 3. The measure of movement of the baseplate 1 relative to the base-plate 2 is visibly indicatedron the scale, shown divided into millimeters, reference being hadAv to Fig. 1, provided for this purpose` along the front edge of the ibase-plate- 1. The indicating pointer 6 is liXedly positioned along the front edge 'of the base-plate 2, to [register with "scale on the plate'l, giving direct readings of plaster-cast or stone `models* upon thel basey plates, and by confining thesize and shapeof the-models'to occupy the spacebetween the Said' walls, the ease of handling and storing; the models ispromoted; To holdthe model 'in-"ritsl position 1 on zthe"4 base-plateS;y l' Yand' 2, there has been provided the retaining screws 8, of length sufficient to extend into the body of the model. These screws Saro disposed in tapped holes, placed centrally, at internally bossed areas along the front and rear Walls of each of the base-plates.

rlhe technique procedure for use of the device is as follows: The micrometer screw 3 is regulated so that the adjacent edges of the base-plates l and 2. are flush with each other, the 'pointer' 6 indicating 0 on the scale, and the retaining screws 8 are set so that the threadedportion of each screw extends as far as possible Within the Walled space of the base-plates. Thein'ipression of the tooth bite having been taken, the process of pouring the model, a plaster-cast model being here assumed for illustration, is carried out in the .usual manner, the model Ybeing poured directly upon the `base-plates of the device. Beforepouring the model the attaching lug receptacles l2, for seating the orthodontic appliance, should be incorporated With the impression, soV that they become .firmly positioned on the model when hardened. l/Vhen the plaster has been allowed to harden, the surplus is trimmed from the model, the retaining screivs 8 Withdrawn from the body .of the model, and the model removed from the device. The model is then savved into tivo sections 9 and 10, reference being had to Fig. l, the cut being made along the reference line formed.- on the lower surface of the model by the junction. of the adjacent edges of the base-plates. rlhe two sections 9 and l() of the model are nov7 replaced in their respective positions on the base-plates, and the retaining screws are set to securely clamp the models in place.

The orthodontic correcting which it is assumed is to be regulated, is then disposed in position on the model with its anchoring or attaching lugs registering Within their respective receptacles 12.*[The regulation of the appliance 11 is preformed by manipulation of the micrometer screw 3, the degree of distention desired being controlled by the movement of the screw 3. l/Vhen the appliance 11 has been distendedto possess the'required tensional adjustment necessaryl to be exerted against the malposed tooth orteetli in the mouth, and While the appliance is in'position on-'the model, a heating-means such as a torchl flame or electric ,current isl applied thereto until the metal has become annealed. Uponl subsequent hardening of `the metal, the appliance Will have .assumed apermanent set of'its newly ad- .justed form. VThe appliance is then'ready to be removed from the modeland fitted in .the mouth. y

As itis generally necessary to regulate the adjustment of the correcting appliance more than-once, before the malposedtooth or teeth Vhave been: shifted-to theirnormalaorY approxiappliance' passais regulations of the appliance to produce these further adjustments. Succeeding regulations in the adjustment of the correcting appliance are carried out by the repetition of the process outlined hereinbefore.

The device embodied in my invention can be employed for distending, contracting or crimping practically any type of orthodontic correcting appliance, Whether ofthe archboiv type or otherwise, and functioning either internally or externally of the dental arch.

lllhile l have described and illustrated in the foregoing a preferred embodiment of my invention, it is to be understood that I do'not limit myself to the detailsof construction and arrangement ofthe parts hereinbefore set forth andfshoivn, but `reserve the privilege to resort tosuch modifications and changes Within the spirit and scope of the appending claims.

lVhat l claim is:

l. A device for regulating the adjustment of orthodontic correcting appliances, comprising separate mounting members adapted. to removably support a dentalmodelisplit intersections and acorrecting appliance removably.supported on said model, and an actuating means for the mounting members for moving` one section of the model relative to another section thereof to cause a change in the form of the correcting appliance.

2. A devicefor regulating the adjustment of orthodontic correcting appliances, comprising a pair of separate base-plate members adapted to removably support substantially half sections of adental model and a correcting appliance removably supported upon said model the model being provided with a means for attaching vt-he.appliance uponthe model, means for rigidly supporting the sections of said model upon the baseplate members, and a micrometer actuating screw member for moving one section of said model relative to the other section.

. 3., A device for regulating the adjustment of orthodontic correcting appliances, coniprisingl a Vpair of separate base-platolnembers adapted to removably support substantially half. sections of aV dental modeland. a correcting Vappliance yremovably v supported upon said model the Vmodel being provided with a means for attaching the appliance upon the model, a retaining screw means for rigidly supporting the sections of said model upon their respective base-plate members, a micrometer actuating screiv member disposed to operate in horizontally positioned co-.operating openings through thegsaidbaseplate members for movingone-section vof said model. relativeto :thegotlienseotion in' the same horizontal plane, and a means for measuring,` the distance one section o1" said model is moved relative to the other section.

4. A device orregulating the adjustment of orthodontic correcting appliances, comprising' a base-plate member adapted to re-` movably support one section oit' a dental model and a second base-plate member adapted to removably support the other section of said model in movable relationship to the first section and a correcting appliance removably supported upon both sections ot said model Lco-oli cratively' positioned the model being provided with an att-aching lug receptacle ymeans for detachably supporting o. i device for regulating the adjustment oi3 orthodontic. correcting appliances, comprising a pair of separate base-plate members adapted to removably support a dental model split vertically 'and longitudinally in substantially half sections and a correcting appliance removably supported upon said model the model being' provided with an attaching` lng receptacle elements permanently positioned upon said model for the said appliance, guide pin members for aligning,- the said two base-plate lmembers liXedly positioned in one oi' the base-plate members, cooperating receptacle means fory the said guide pin .members provided in the other base-plate. member, a retaining means for rigidly clamping each section of said model vupon its respective base-plate member, a

micrometer actuating` screw member disposed With the shank thereof in a through hole horizontally positioned in one of the baso-plate members and with the threaded portion thereof engaging Within a` correspondingly threaded hole horizontally positioned in the other base-plate member, and a measuring means for indicating the distance one base-plate is caused to move relative to the other.

Signed at Pelham Man-or, in the county of liestchester and State of New York, this 14th day of June A. D. 1925. i

PERCY NORMAlVILLAMSn 

